_terms_enum when using alias indices about elasticsearch HOT 2 OPEN

Pinging @elastic/es-search (Team:Search)

from elasticsearch.

I believe the _terms_enum_api was never designed to work with aliases. The alias described works through a search filter that gets attached to search calls on the alias, but the _terms_enum_api doesn't use Lucene search under the hood but uses the term dictionaries directly. That is why, e.g. you can also get terms for deleted documents that haven't been merged away yet. Those approximations were made to make the api very fast to be used as an easy auto-complete like feature.
While filtering using search on top of that might be possible, it will most certainly come at a performance cost and require larger changes.
I'm re-labeling this as an enhancement because I don't think this has ever been working for the reasons stated above.

from elasticsearch.